Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures
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Ohio University / OhioLINK
2013
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1383242271 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou13832422712021-08-03T06:20:07Z Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures Latt, Kyaw Zin Physics STM Ag111 surface state BETS-GaCl4 The evolution of the Ag(111) surface state near the zero, one and two dimensional defects is explored using a ultra-high vacuum low temperature scanning tunneling microscopy. A carbon monoxide CO molecule adsorbed on Ag(111) surface, an Ag(111) step and a BETS-GaCl<sub>4</sub> cluster and layer on Ag(111) are used as zero, one and two dimensional defects, respectively. The dI/dV spectra are acquired as a function of distance from the defects in atomic scale and analyze the behaviors of the surface state intensities and on-set energies. In all cases, the surface state intensity decreases near the defects. However the surface state on-set energy shows different behaviors. In this thesis, a simple model based on the interference of plane waves due to reflection is proposed and simulated to explain the oscillations in dI/dV spectra appeared above the surface state onset energy. The results show that unlike Ag(111) step and BETS-GaCl<sub>4</sub> layer, the reflection of electrons at the CO molecule and the two dimensional molecular cluster are very weak. These results open similar studies on other interesting system such as superconductor-metal boundary at the ultimate atomic limit. 2013 English text Ohio University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1383242271 http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1383242271 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Physics STM Ag111 surface state BETS-GaCl4 |
| spellingShingle |
Physics STM Ag111 surface state BETS-GaCl4 Latt, Kyaw Zin Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures |
| author |
Latt, Kyaw Zin |
| author_facet |
Latt, Kyaw Zin |
| author_sort |
Latt, Kyaw Zin |
| title |
Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures |
| title_short |
Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures |
| title_full |
Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures |
| title_fullStr |
Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures |
| title_full_unstemmed |
Interactions of Two Dimensional Surface State Electron Gas with Zero, One and Two Dimensional Structures |
| title_sort |
interactions of two dimensional surface state electron gas with zero, one and two dimensional structures |
| publisher |
Ohio University / OhioLINK |
| publishDate |
2013 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1383242271 |
| work_keys_str_mv |
AT lattkyawzin interactionsoftwodimensionalsurfacestateelectrongaswithzerooneandtwodimensionalstructures |
| _version_ |
1719434976378748928 |